CAJ | 학술논문

土壤腐殖酸的吸附作用对多环芳烃等疏水性有机污染物的迁移产生影响.针对腐殖酸负载载体的吸附能效开展研究,利用不同粒径的玻璃珠(37～63、105～125、177～250和350～500 μm)作为载体,从土壤中提取腐殖酸并负载其上进行菲的吸附对比试验,结果表明,菲在固液两相的分布规律符合Freundlich吸附等温式,粒径较小的材料(比表面积较大)负载效率高且整体吸附能力强.采用吸附能力系数与负载效率的比值评价吸附能效,表现为粒径较小的材料(比表面积较大)吸附能效反而偏低.本文为提高腐殖酸吸附能效的应用研究提供了理论基础.
토양부식산적흡부작용대다배방경등소수성유궤오염물적천이산생영향.침대부식산부재재체적흡부능효개전연구,이용불동립경적파리주(37～63、105～125、177～250화350～500 μm)작위재체,종토양중제취부식산병부재기상진행비적흡부대비시험,결과표명,비재고액량상적분포규률부합Freundlich흡부등온식,립경교소적재료(비표면적교대)부재효솔고차정체흡부능력강.채용흡부능력계수여부재효솔적비치평개흡부능효,표현위립경교소적재료(비표면적교대)흡부능효반이편저.본문위제고부식산흡부능효적응용연구제공료이론기출.
Humic acid in soil plays an important role in transfer of hydrophobic organic compounds such as polycyclic aromatic hydrocarbons (PAHs).Humic acid can be coated onto some carriers,and its adsorption performance is of great concern.In this study,glass beads in four different size ranges (37-63 μm,105-125 μm,177-250 μm,350-500 μm) were used as the carrier and coated with humic acid extracted from natural soil.The lab-scale experiment for phenanthrene adsorption was carried out.The distribution of phenanthrene in solid and water phases was in accordance with Freundlich isotherms,which implies that larger total surface area (TSA) leads to higher coating efficient and adsorption capacity.However,when the ratio of Freundlich capacity parameter to coating efficiency was used to evaluate the adsorption performance of humic acid in consideration of TSA,smaller particles (with larger TSA) resulted in a smaller ratio value.This study provides a reference for further studies on improvement of adsorption of humic acids.